A car manufacturer produces three models of trucksand the average gas mileage of the three models must be at least 21 mpg. Create an inequality to determine what the third model must get, if the first two models get 17 mpg and 19 mpg. Solve the inequality by showing and explaining each of your steps.

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?